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1. High-Efficiency External Finned Radiator System
The unit features a prominent external oil radiator with dense, corrugated cooling fins that drastically expand the heat dissipation surface area. Utilizing natural thermal convection, the heated dielectric oil circulates outward into the radiator for passive cooling before recirculating into the main tank. Compared to standard embedded cooling systems, this advanced design improves heat transfer efficiency by over 40%. As a result, it ensures the internal transformer windings consistently operate within a safe temperature rise limit, even under continuous high-load conditions in ambient temperatures exceeding +40°C, thereby preventing insulation degradation.
2. Physically Segregated Dual-Compartment Safe Access
This pad-mounted transformer features a clearly defined physical separation between the white electrical control and switchgear cabinet and the dark grey transformer oil tank. The dual-compartment structure completely eliminates the risk of flammable oil vapor leaking into the control or low-voltage chamber. With standard yellow high-voltage warning markings, the front double doors allow operators to inspect, test, and maintain the circuit breakers, meters, and control systems independently without exposing personnel to the live oil-immersed components. This strict segregation design aligns with global safety standards to guarantee absolute personnel protection.
3. Superior Outdoor Weatherproofing & Extended Service Life
Constructed from heavy-duty zinc-coated steel plates and finished with an advanced anti-corrosion electrostatic spray coating (minimum 80μm thickness), this enclosure offers exceptional resistance to UV radiation and coastal salt spray. The intelligent sloped roof design rapidly sheds rainwater and snow loads to prevent accumulation, while the insulated black base effectively blocks ground moisture and flooding. Having undergone rigorous extreme-weather durability tests, this robust structure ensures a maintenance-free outdoor lifespan of over 25 years, making it perfectly suited for harsh coastal solar farms or high-altitude desert installations.
4. Optimized Load Management & Smart Grid Interconnection
Designed to handle the intermittent output fluctuations typical of solar power generation, the transformer utilizes a high-permeability, low-loss silicon steel core that significantly reduces no-load operational energy consumption. The integrated intelligent protection system includes overvoltage/undervoltage relays, overcurrent protection, and built-in surge arresters. If internal sensors detect critical grid disturbances or internal faults, the high-speed breaker mechanism triggers a disconnection within <50 milliseconds, ensuring a safe, swift, and reliable isolation between the photovoltaic array and the main utility grid during serious emergencies.
| Rated capacity (kVA) | High voltage/low voltage | 630~8000 | |||
| Voltage (kV) | Rated voltage on the high voltage side | 35(36、36.75、37、38.5) | |||
| Maximum operating voltage of the system | 40.5 | ||||
| Rated voltage on the low voltage side | For wind power generation | 0.69(0.95、1.14) | |||
| Rated insulation level (kV) | Rated voltage on the low voltage side | For photovoltaic power generation | 0.48、0.5、0.54、0.6(0.63、0.8) | ||
| High voltage switch side power frequency withstand voltage | 95 | ||||
| Transformer body power frequency withstand voltage | 85 | ||||
| Peak impulse withstand voltage | 200 | ||||
| Low voltage side power frequency withstand voltage of transformer | 5 | ||||
| connection group | For wind power generation | Dyn11 | |||
| For photovoltaic power generation | Dy11orYd1;1Dy11y11orYd11d11 | ||||
| Protection level | fuel tank | IP68 | |||
| High and low pressure chambers | IP54 | ||||
| After the high-voltage chamber door is opened | IP3X | ||||
| Rated rating rate (Hz) | 50/60 | ||||
| phase number | three-phase | ||||
| 10kV voltage level | ||||||||||||||
| Component name | Rated voltage (kV) | Rated current (A) | Power frequency withstand voltage phase/fracture (kV) | Lightning impulse withstand voltage (kV) | Short time withstand current time(kA/s) | Short circuit peak withstand current (kA) | Mechanical lifespan (times) | |||||||
| Vacuum load switch (or vacuum circuit breaker) | 12 | 6301250 | 42 | 75/85 | 20/4 | 20/4 | 10000 | |||||||
| Current limiting fuse (not available for circuit breakers) | 12 | 16、20、25、31.5、40、50、63、100、160、200 | 42 | 75 | Rated maximum breaking current (kA): 50 | |||||||||
1. Commercial Complexes & High-Rise Residential
Modern commercial complexes and high-rise residential buildings require reliable, compact, and fire-safe power distribution equipment.
2. Industrial Parks & Heavy Manufacturing
Industrial parks and heavy manufacturing facilities, including steel mills, cement plants, chemical factories, and automotive assembly lines, consume large volumes of medium-voltage power and require robust, outdoor-rated distribution equipment.
3. PV & Energy Storage Grid Connection
Solar photovoltaic farms and battery energy storage systems (BESS) require dedicated step-up transformer solutions to interface with the medium-voltage grid.
4. Infrastructure — Rail Transit, Healthcare & Data Centers
Critical infrastructure applications, including metro and railway systems, hospitals, and data centers, demand the highest levels of power reliability and redundancy.
5. Municipal & Environmental — Water Treatment & Pumping Stations
Municipal water supply, wastewater treatment plants, and flood control pumping stations present challenging operating conditions for electrical distribution equipment. altitude not more than 1000m;
Use Environmental Conditions
1. Ambient air temperature: -5℃ ~+40℃ and the average temperature should not exceed +35℃ in 24h.
2. Relative humidity should not exceed 50% at max temperature. Higher relative humidity is allowed at lower temperature. Ex. 90% at +20℃ . But in view of the temperature change, it is possible that moderate dews will produce casually.
3. Altitude above sea level should not exceed 2000M.
4. Installation gradient not exceed 5° .
5. Indoor without dust, corrosive gas and rain water attack.
Q：Are you a trading company or factory?
A：We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.
Q：What certifications do you have?
A：Yes, we hold ISO, CE, and IEC certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.
Q：How long is your delivery time?
A：For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.
Q：What is the warranty time?
A：3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.
